From: Connary, Julie Ann (jconnary@xxxxxxxxx)
Date: Tue Jan 02 2001 - 19:29:14 GMT-3
Thanks,
but I have sometimes had to turn off auto-summary to get it to work with
network statememts. So I understand
what the documentation says - but my experience says other - but it might
depend on the OS version too.
Julie Ann
At 08:45 AM 1/3/2001 +1300, Justin Menga wrote:
>Hi,
>
>The others have answered your question - just one small point - leaving auto
>summary on doesn't affect networks injected by the 'network' statement. It
>only affects networks injected by redistribution.
>
>Regards,
>
>Justin Menga CCIE #6640 MCSE+I CCSE
>WAN Specialist
>Computerland New Zealand
>PO Box 3631, Auckland
>DDI: (+64) 9 360 4864 Mobile: (+64) 25 349 599
>mailto: justin.menga@computerland.co.nz
>
>
>-----Original Message-----
>From: Connary, Julie Ann [mailto:jconnary@cisco.com]
>Sent: Monday, 1 January 2001 4:59 a.m.
>To: ccielab@groupstudy.com
>Subject: network statement in bgp - best practice question
>
>
>Hi All,
>
>I'm working on some labs and I am doing this one lab using first
>redistribution and second
>network statements under bgp.
>
>My question is if you have 3 ibgp neighbors in AS 200. Router 1 is EBGP
>peered to AS100. Router 2 and
>3 are EBGP peered to AS300. Since Router 1, 2 and 3 are in the same AS,
>running an IGP, so they
>have knowledge of all internal routes, is it best to put a network
>statement for the local network numbers in
>all 3 BGP routers or just one?
>
>I am using network 10.x.x.x, so I put in router 2 network statements for
>all the particular
>subnets and then an aggregate-summary address (I guess, I could just have
>left auto-summary on also).
> I noticed that routers 1 and 3 get
>the route via IBGP, since they have routes to the 10.x.x.x network it
>becomes a best route
>and they advertise it via EBGP.
>
>Any rules of thumb? Perhaps it is best to put it in all border routers
>incase internal routing fails?
>
>Julie Ann
>------------------------------------------------------------------------
> Julie Ann Connary
> | | Network Consulting Engineer
> ||| ||| Federal Support Program
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>Herndon VA 20171
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>
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